<template>
  <div class="login">
    <div class="loginBox">
      <div class="top">
        <img src="@/assets/images/banner.png" style="position: relative; top: 30%" />
        <p class="title">设备设施安全系统</p>
      </div>
      <div class="main">
        <div class="login-title">用户登录</div>
        <div class="login-view">
          <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
            <el-form-item prop="username">
              <el-input v-model="loginForm.username" type="text" size="large" auto-complete="off" placeholder="账号" clearable>
                <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
              </el-input>
            </el-form-item>
            <el-form-item prop="password">
              <el-input
                v-model="loginForm.password"
                type="password"
                size="large"
                auto-complete="off"
                placeholder="密码"
                @keyup.enter="handleLogin"
                clearable
                show-password
              >
                <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
              </el-input>
            </el-form-item>
            <el-form-item prop="code" v-if="captchaEnabled">
              <el-input v-model="loginForm.code" size="large" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter="handleLogin">
                <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
              </el-input>
              <div class="login-code">
                <img :src="codeUrl" @click="getCode" class="login-code-img" />
              </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin: 0px 0px 25px 0px">记住密码</el-checkbox>
            <el-form-item style="width: 100%">
              <el-button :loading="loading" size="large" type="primary" style="width: 100%" @click.prevent="handleLogin">
                <span v-if="!loading">登 录</span>
                <span v-else>登 录 中...</span>
              </el-button>
              <div style="float: right" v-if="register">
                <router-link class="link-type" :to="'/register'">立即注册</router-link>
              </div>
            </el-form-item>
          </el-form>
        </div>
      </div>
    </div>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2024-{{ currentYear }} sjgtw.com All Rights Reserved.</span>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from "@/store/modules/user";

const userStore = useUserStore();
const route = useRoute();
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: "admin",
  password: "admin123",
  rememberMe: false,
  code: "",
  uuid: "",
});

const loginRules = {
  username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
  password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
  code: [{ required: true, trigger: "change", message: "请输入验证码" }],
};

const codeUrl = ref("");
const loading = ref(false);
//底部年份
const currentYear = ref("");
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

watch(
  route,
  (newRoute) => {
    redirect.value = newRoute.query && newRoute.query.redirect;
  },
  { immediate: true }
);
function getYear() {
  // 获取当前是哪一年啊
  const date = new Date();
  const year = date.getFullYear();
  currentYear.value = year;
}
function handleLogin() {
  proxy.$refs.loginRef.validate((valid) => {
    if (valid) {
      loading.value = true;
      let loginObj = JSON.parse(JSON.stringify(loginForm.value));
      sessionStorage.setItem("username", loginObj.username);
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginObj.rememberMe) {
        Cookies.set("username", loginObj.username, { expires: 30 });
        Cookies.set("password", encrypt(loginObj.password), { expires: 30 });
        Cookies.set("rememberMe", loginObj.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      loginObj.password = encrypt(loginObj.password);
      // 调用action的登录方法
      userStore
        .login(loginObj)
        .then(() => {
          const query = route.query;
          const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
            if (cur !== "redirect") {
              acc[cur] = query[cur];
            }
            return acc;
          }, {});
          router.push({ path: redirect.value || "/", query: otherQueryParams });
        })
        .catch(() => {
          loading.value = false;
          // 重新获取验证码
          if (captchaEnabled.value) {
            getCode();
          }
        });
    }
  });
}

function getCode() {
  getCodeImg().then((res) => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
  };
}

getCode();
getCookie();
getYear();
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}

.loginBox {
  z-index: 99;
  width: 800px;
  height: 580px;
  margin: auto;
  background: #fff;
  box-shadow: 0 0 20px #0000001a;
  border-radius: 8px;
  overflow: hidden;
  .top {
    text-align: center;
    width: 355px;
    height: 100%;
    background-size: 100%;
    background: url("../assets/images/bg_inner.png") center;
    float: left;
    .title {
      font-size: 28px;
      color: #fff;
      font-family: Avenir, "Helvetica Neue", Arial, Helvetica, sans-serif;
      font-weight: 600;
      line-height: 320px;
    }
  }
  .main {
    width: 445px;
    margin: 0 auto;
    float: left;
    display: block;
    position: relative;
    box-sizing: border-box;
    padding-left: 20px;
    padding-right: 20px;
    .login-title {
      text-align: center;
      font-size: 18px;
      color: rgb(29, 33, 41);
      padding: 64px 0;
    }
    :deep(.arco-form-item) {
      flex-wrap: wrap;
      margin-top: 10px;
    }
    .code {
      width: 107px;
      height: 100px;
      cursor: pointer;
      border: 1px solid #ccc;
      box-sizing: border-box;
    }
    .sumbit {
      width: 100%;
    }
  }
}
.el-button {
  width: 100% !important;
}
.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-form-item--default {
    margin-bottom: 28px;
  }
  .el-input {
    height: 40px;
    input {
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
